graph LR
subgraph "MPPT升降压转换器"
A["太阳能输入 \n 18-24V"] --> B["输入电容阵列"]
B --> C["高频开关节点"]
C --> D["功率电感 \n 10μH"]
D --> E["同步整流节点"]
E --> F["VBGQF1402 \n 同步整流管"]
F --> G["输出滤波"]
G --> H["直流母线 \n 12-20V"]
I["VBGQF1402 \n 主开关管"] --> C
J["控制器"] --> K["栅极驱动器"]
K --> I
K --> F
H -->|电压反馈| J
L["电流检测"] -->|电流反馈| J
end
subgraph "EMI滤波设计"
M["输入π型滤波器"] --> B
N["共模磁珠"] --> M
O["输出LC滤波器"] --> G
end
style F fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style I fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
智能负载管理拓扑详图
graph TB
subgraph "多端口智能分配"
A["直流母线"] --> B["功率分配器"]
B --> C["USB-C通道"]
B --> D["USB-A通道"]
B --> E["DC输出通道"]
subgraph "USB-C端口控制"
C --> F["VB3420-1 \n 双N-MOSFET"]
F --> G["PD协议芯片"]
G --> H["USB-C接口 \n 20V/3A"]
end
subgraph "USB-A端口控制"
D --> I["VB3420-2 \n 双N-MOSFET"]
I --> J["QC识别芯片"]
J --> K["USB-A接口 \n 5V/2.4A"]
end
subgraph "DC端口控制"
E --> L["VB3420-3 \n 双N-MOSFET"]
L --> M["电压调节"]
M --> N["DC接口 \n 12V/2A"]
end
O["主控MCU"] --> P["电流监测"]
P --> Q["智能分配算法"]
Q --> F
Q --> I
Q --> L
end
style F fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style I fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style L fill:#fff3e0,stroke:#ff9800,stroke-width:2px
保护与热管理拓扑详图
graph LR
subgraph "电气保护网络"
A["太阳能输入"] --> B["TVS阵列 \n 防浪涌"]
B --> C["共模滤波器"]
C --> D["VBB2355 \n 防反接保护"]
D --> E["输入过压保护"]
E --> F["输入过流保护"]
F --> G["系统电源"]
H["电池输出"] --> I["VBB2355 \n 放电控制"]
I --> J["电池过放保护"]
J --> K["电池短路保护"]
K --> L["负载输出"]
M["输出端口"] --> N["VB3420 \n 负载开关"]
N --> O["输出过流保护"]
O --> P["输出短路保护"]
P --> Q["软启动控制"]
end
subgraph "热管理系统"
R["温度传感器1 \n 同步整流管"] --> S["MCU温度监测"]
T["温度传感器2 \n 负载开关"] --> S
U["温度传感器3 \n 电池仓"] --> S
S --> V["三级散热控制"]
V --> W["一级: PCB敷铜 \n 主动散热"]
V --> X["二级: 局部散热 \n 优化布局"]
V --> Y["三级: 自然对流 \n 结构设计"]
W --> Z["同步整流MOSFET \n 散热过孔阵列"]
X --> AA["负载开关 \n 局部敷铜"]
Y --> AB["保护器件 \n 空气对流"]
end
style D fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style I fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style N fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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